the quality of doing something well with no waste of time or money

ways of wasting less time and money or of saving time or money

We are looking at our business to see where savings and efficiencies can be made.

the relationship between the amount of energy that goes into a machine or an engine, and the amount that it produces

We have failed to improve energy efficiency standards.

What is the efficiency percentage of solar panels?

a small apartment with one main room for living, cooking and sleeping in and a separate bathroom

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